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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 139 · 40 questions
TalentJR

How to solve it (Same number of places): Add zeros at the end so every decimal has the same number of places (0.5 = 0.500). Compare or add them like whole numbers, keeping the decimal points in a line. Place value after the point: tenths (0.1), hundredths (0.01), thousandths (0.001).

NameDateTime takenScore ___ / 40
  1. 1.2.86 + 7.9 = ? (a) 10.86 (b) 3.65 (c) 10.76 (d) 10.66
  2. 2.Which is the smallest: 0.58, 0.5, 0.473, 0.026? (a) 0.58 (b) 0.5 (c) 0.473 (d) 0.026
  3. 3.1.67 + 1.2 = ? (a) 2.97 (b) 2.87 (c) 1.79 (d) 2.77
  4. 4.Which is the greatest: 0.6, 0.065, 0.576, 0.64? (a) 0.6 (b) 0.065 (c) 0.576 (d) 0.64
  5. 5.Which is the smallest: 0.247, 0.36, 0.3, 0.037? (a) 0.247 (b) 0.36 (c) 0.3 (d) 0.037
  6. 6.2.94 + 3.6 = ? (a) 3.3 (b) 6.64 (c) 6.54 (d) 6.44
  7. 7.6.42 + 4.1 = ? (a) 6.83 (b) 10.42 (c) 10.52 (d) 10.62
  8. 8.What is the value of the digit 8 in 83.952? (a) 80 (b) 8 (c) 0.08 (d) 0.8
  9. 9.Which is the greatest: 0.038, 0.752, 0.8, 0.81? (a) 0.038 (b) 0.752 (c) 0.8 (d) 0.81
  10. 10.What is the value of the digit 3 in 34.628? (a) 0.3 (b) 3 (c) 30 (d) 0.03
  11. 11.What is the value of the digit 1 in 12.594? (a) 0.01 (b) 10 (c) 0.1 (d) 1
  12. 12.What is the value of the digit 9 in 28.591? (a) 0.09 (b) 0.9 (c) 9 (d) 0.009
  13. 13.9.07 + 7.4 = ? (a) 16.37 (b) 16.57 (c) 16.47 (d) 9.81
  14. 14.What is the value of the digit 3 in 79.318? (a) 0.003 (b) 3 (c) 0.03 (d) 0.3
  15. 15.Which is the greatest: 0.036, 0.6, 0.62, 0.587? (a) 0.036 (b) 0.6 (c) 0.62 (d) 0.587
  16. 16.Which is the smallest: 0.7, 0.041, 0.639, 0.78? (a) 0.7 (b) 0.041 (c) 0.639 (d) 0.78
  17. 17.Which is the greatest: 0.7, 0.043, 0.72, 0.623? (a) 0.7 (b) 0.043 (c) 0.72 (d) 0.623
  18. 18.What is the value of the digit 4 in 43.571? (a) 40 (b) 4 (c) 0.4 (d) 0.04
  19. 19.What is the value of the digit 9 in 75.469? (a) 0.9 (b) 0.009 (c) 9 (d) 0.09
  20. 20.What is the value of the digit 3 in 38.165? (a) 30 (b) 3 (c) 0.03 (d) 0.3
  21. 21.What is the value of the digit 2 in 56.927? (a) 0.2 (b) 0.02 (c) 0.002 (d) 2
  22. 22.3.44 + 5.7 = ? (a) 9.24 (b) 9.04 (c) 9.14 (d) 4.01
  23. 23.What is the value of the digit 8 in 38.952? (a) 0.08 (b) 80 (c) 8 (d) 0.8
  24. 24.What is the value of the digit 6 in 47.256? (a) 0.06 (b) 6 (c) 0.6 (d) 0.006
  25. 25.What is the value of the digit 9 in 91.275? (a) 0.09 (b) 9 (c) 0.9 (d) 90
  26. 26.Which is the smallest: 0.381, 0.012, 0.42, 0.4? (a) 0.381 (b) 0.012 (c) 0.42 (d) 0.4
  27. 27.What is the value of the digit 6 in 26.478? (a) 60 (b) 0.6 (c) 6 (d) 0.06
  28. 28.Which is the smallest: 0.4, 0.323, 0.44, 0.094? (a) 0.4 (b) 0.323 (c) 0.44 (d) 0.094
  29. 29.Which is the greatest: 0.068, 0.22, 0.161, 0.2? (a) 0.068 (b) 0.22 (c) 0.161 (d) 0.2
  30. 30.What is the value of the digit 6 in 14.672? (a) 6 (b) 0.006 (c) 0.6 (d) 0.06
  31. 31.4.76 + 1.6 = ? (a) 6.26 (b) 4.92 (c) 6.36 (d) 6.46
  32. 32.What is the value of the digit 3 in 62.387? (a) 0.3 (b) 0.03 (c) 3 (d) 0.003
  33. 33.3.26 + 5.1 = ? (a) 8.26 (b) 3.77 (c) 8.36 (d) 8.46
  34. 34.What is the value of the digit 1 in 76.149? (a) 0.01 (b) 0.1 (c) 1 (d) 0.001
  35. 35.1.01 + 1.9 = ? (a) 2.81 (b) 3.01 (c) 1.2 (d) 2.91
  36. 36.Which is the smallest: 0.2, 0.037, 0.21, 0.182? (a) 0.2 (b) 0.037 (c) 0.21 (d) 0.182
  37. 37.7.13 + 7.6 = ? (a) 7.89 (b) 14.83 (c) 14.63 (d) 14.73
  38. 38.What is the value of the digit 9 in 69.734? (a) 0.09 (b) 90 (c) 9 (d) 0.9
  39. 39.3.19 + 3.2 = ? (a) 3.51 (b) 6.39 (c) 6.49 (d) 6.29
  40. 40.What is the value of the digit 2 in 96.238? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002

Answer key

  1. 10.76
  2. 0.026
  3. 2.87
  4. 0.64
  5. 0.037
  6. 6.54
  7. 10.52
  8. 80
  9. 0.81
  10. 30
  11. 10
  12. 0.09
  13. 16.47
  14. 0.3
  15. 0.62
  16. 0.041
  17. 0.72
  18. 40
  19. 0.009
  20. 30
  21. 0.02
  22. 9.14
  23. 8
  24. 0.006
  25. 90
  26. 0.012
  27. 6
  28. 0.094
  29. 0.22
  30. 0.6
  31. 6.36
  32. 0.3
  33. 8.36
  34. 0.1
  35. 2.91
  36. 0.037
  37. 14.73
  38. 9
  39. 6.39
  40. 0.2

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